What Are Car Key Programmers? Car key programmers are devices that replicate a transponder into the memory of a vehicle. They are useful for replacing keys that are stolen or lost. They can be used to reset oil service light and warning lights for tire pressure and many other functions. https://g28-car-key-solutions98235.pages10.com/what-is-the-reason-car-key-reprogramming-is-the-right-choice-for-you-64878841